Four samples of nominally pure KCl crystals and doped with ${\text{Zn}}^{2+}$ impurities are grown by the Czochralski method and characterized by X-ray diffraction and Proton Induced X-ray Emission techniques. Positron Annihilation Lifetime Spectroscopy (PALS) is performed to obtain information on the cation vacancy type defects and their evolution under doping. The results of the PALS experiment indicate that doping KCl by ${\text{Zn}}^{2+}$ ions, at first increases the concentration of mono vacancies and in the second stage leads the creation of divacancy sites. Coincidence Doppler Broadening Spectroscopy (CDBS) is carried out to obtain the chemical environment of positron annihilation sites. The results of CDBS show that cation vacancies have a significant role in the annihilation process. An interesting observation is the participation of ${\text{Zn}}^{2+}$ cations in the positron annihilation process which confirms that positrons are not completely localized on the anion sites. The internal consistency between the results of PALS and CDBS experiments is also clarified.

四个标称纯KCl晶体样品并掺杂 ${\text{锌}}^{2+}$杂质通过切克劳斯基方法生长，并通过X射线衍射和质子诱导X射线发射技术进行表征。进行正电子An没寿命光谱（PALS），以获取有关阳离子空位型缺陷及其在掺杂条件下的演变的信息。PALS实验的结果表明，通过${\text{锌}}^{2+}$离子，首先增加了单空位的浓度，而在第二阶段导致了空位的产生。进行巧合多普勒增宽光谱（CDBS）以获得正电子ron灭位点的化学环境。CDBS的结果表明，阳离子空位在an灭过程中具有重要作用。一个有趣的观察是${\text{锌}}^{2+}$正电子an灭过程中的阳离子，这证实了正电子没有完全局限在阴离子位点上。还阐明了PALS和CDBS实验结果之间的内部一致性。